Book page holder



July 18, 1933.

P. KOBLER BOOK PAGE HOLDER I Filed Dec. 22, 1931 to connect the two levers'so that they can Patented July 18, 1-933 PA LKOBLER, or LYNBRooK; NE YORK BOOK PAGE HOLDER,

Application filed December 22,1931. Serial No. 582,544,:

This invention relates to improvementsin page holding devices for bookholders. The bookpageholder according to the presentinvention comprises bookpageholdingcjmeans which are approximately in the sameelevation as the middleof the upfolded book is, a. lever on each side of the book or underthe book, these levers being movable'havingat theirends short parts which are holding the up folded sheets in position, further means work simultaneously; v

A constructional example of thebookpageholder according to-the present invention is which:

FigI is a plan View ofthe device and Fig. II is a three-dimension figure showing the same device holding the npfolded pages of a book.

Referring now tothedrawing 1 denotes the supporting plate for the right hand lever and 2 the supporting plate of the left'hand lever.

These plates 1 and 2, as shown in Fig. II maybe secured to the top surface of a sup,

port indicated in broken lines, so thatthe device holds a book in the position shown, and so that part of the book may hang down over the' front face of said support, and be engaged by twohooks, 9, 9 projecting from said front face. The twolevers are connect ed by rod 3 and 4,4 indicateshort projections laterally from each lever which are holding the upfolded pages from falling down. 5 is the left hand, 6 the right hand lever.

When lever 5 is displaced in the direction same movement towards the middle of the illustrated on the accomp anying drawing, in

other direction. towards the other lever 6, lever 6 makesthef i booka .Bymoving'i lever 5 outwards (again, i

lever 6 is movedo'utwards, or away from the book too, Lever '5 has its pivotalpoint bej tween the ends while lever 6 has. its pivotal point on one end. 7 shows pivotalpoint of lever 5,8 shows pivotal point of lever-6.1 When the levers are open the" pages of the book may lie-folded upwards and when it is desiredto keep them in position the levers are i V j 7 1; page holding device comprising supporting means,-afpa'irjof spaced opposed.

levers each having at on endalateral extension projecting toward the other lever so play parallel to the leaves ofa.- ook resting. on said support and meansso connectingsaid levers, that when one lever is moved the other movesinthe opposite direction to engage H over or disengage from saidv leaves.

A page holding device comprising apair ofbars upon which. a booklmay'rest,=- apair of levers each pivoted to a bar at opposite sides of the place intendedito be, occupied by;

lever being so extended and provided with. I

a projection toward the otherlever'that-such movement of one lever tocarry its projection over oraway from a pagevvill cause the other lever to do the same "by a movement in the the, book to play parallel to said bars each I I "PAUL KOBLER. j

spaced from the support and. thelevers sopivoted that said projections mayj'overlie and" 

